Summary & Overview
HCPCS H0009: Acute Detoxification for Alcohol and/or Drug Withdrawal
HCPCS Level II code H0009 represents acute detoxification services for alcohol and/or drug withdrawal provided in a hospital inpatient setting. Nationally, this code is central to billing for medically managed withdrawal care, capturing services that require intensive monitoring, medical stabilization, and often multidisciplinary support. Accurate use of the code affects clinical documentation, care coordination, and payer adjudication for inpatient substance use disorder treatment.
Major national payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, and UnitedHealthcare. The publication outlines payer coverage contexts, common billing relationships with related codes, and the clinical situations that typically justify reporting the code.
Readers will learn the clinical scope tied to H0009, typical sites of service, and how it relates to adjacent service codes for detoxification levels. The content summarizes documentation elements commonly associated with inpatient acute detoxification, highlights common ICD-10 diagnostic contexts, and identifies related procedural codes used for alternative detoxification settings. Where input data is incomplete, the text notes missing metadata explicitly. This executive summary is intended to inform coding staff, revenue cycle professionals, and policy analysts about the operational and clinical contours of H0009 at a national level without offering clinical or billing advice.
Billing Code Overview
HCPCS Level II code H0009 describes alcohol and/or drug services: acute detoxification (hospital inpatient). The service type is substance abuse/disorder services, delivered in a hospital inpatient setting such as place of service 21. This code is used to report medically managed acute detoxification care provided to patients requiring intensive monitoring and stabilization for withdrawal from alcohol or other substances.
Clinical & Coding Specifications
Clinical Context
A 44-year-old patient with a history of alcohol dependence presents to the emergency department with escalating withdrawal symptoms (tremor, agitation, diaphoresis) and vital sign instability. The patient is admitted to the hospital inpatient unit for medically monitored acute detoxification. The clinical workflow includes initial medical and substance-use assessment, continuous nursing observation, scheduled pharmacologic management (e.g., benzodiazepine taper per hospital protocol), management of concurrent medical issues, daily multidisciplinary rounds with addiction psychiatry or addiction counselor consultation, and discharge planning with referral to a residential program or outpatient addiction services.
Coding Specifications
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HCPCS Level II code
H0009: Alcohol and/or drug services; acute detoxification (hospital inpatient). -
Common Modifiers:
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HF- Substance Abuse Program: Used to indicate services provided by a designated substance abuse treatment program. -
U1- Medicaid Level of Care 1: Indicates the Medicaid-determined level of care classification as Level of Care 1 where applicable. -
Associated Provider Taxonomies:
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101YA0400X- Addiction Counselor: Professionals providing counseling focused on substance use disorder treatment and recovery support.